Files
safe_numerics/examples/example93.cpp
Robert Ramey 29cf7f3d12 progress on example 93 to demonstrate trapping all potential exceptions at compile time
removed constexpr from exception policies.
  this eliminates obstacle to gcc compilation which doesn't support constexpr throw
  unfortunately, all versions of gcc trip compiler fault so gcc not supported for now
safe_literal - make this an unsafe type since it doesn't have policies - this might change in the future
2016-01-11 11:01:15 -08:00

117 lines
2.8 KiB
C++

//////////////////////////////////////////////////////////////////
// example91.cpp
//
// Copyright (c) 2015 Robert Ramey
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#include <iostream>
#include <limits>
#include <boost/integer.hpp>
#include "../include/cpp.hpp"
#include "../include/automatic.hpp"
#include "../include/exception.hpp"
#include "../include/safe_integer.hpp"
#include "../include/safe_range.hpp"
#include "../include/safe_literal.hpp"
// use same type promotion as used by the pic compiler
// see the following comment in motor.c
// Types: int8,int16,int32=8,16,32bit integers, unsigned by default
using pic16_promotion = boost::numeric::cpp<
8, // char
8, // short
8, // int
16, // long
32 // long long
>;
using exception_policy = boost::numeric::trap_exception;
// define safe types used desktop version of the program. In conjunction
// with the promotion policy above, this will permit us to guarantee that
// the resulting program will be free of arithmetic errors introduced by
// C expression syntax and type promotion with no runtime penalty
template <typename T> // T is char, int, etc data type
using safe_t = boost::numeric::safe<
T,
pic16_promotion,
exception_policy
>;
using safe_bool_t = boost::numeric::safe_unsigned_range<
0,
1,
pic16_promotion,
exception_policy
>;
using step_t = boost::numeric::safe_signed_range<
0,
1000,
pic16_promotion,
exception_policy
>;
using denom_t = boost::numeric::safe_signed_range<
-4005,
4005,
pic16_promotion,
exception_policy
>;
using phase_ix_t = boost::numeric::safe_unsigned_range<
0,
3,
pic16_promotion,
exception_policy
>;
using c24_t = boost::numeric::safe_signed_range<
-0x8000000,
0x7ffffff,
pic16_promotion,
exception_policy
>;
#define literal(x) boost::numeric::safe_literal<x>{}
#define DESKTOP
#include "motor3.c"
#include <chrono>
#include <thread>
void test(step_t m){
std::cout << "move motor to " << m << '\n';
motor_run(m);
while(true == run_flg){
isr_motor_step();
std::cout << motor_pos << ' ' << c32 << ' ' << c << '\n';
std::this_thread::sleep_for(std::chrono::microseconds(ccpr));
}
}
int main()
{
std::cout << "start test\n";
try{
initialize();
// move motor to position 100
test(literal(100));
// move motor to position 1000
//test(1000);
// move back to position 0
test(literal(0));
}
catch(std::exception & e){
std::cout << e.what() << '\n';
return 1;
}
catch(...){
std::cout << "test interrupted\n";
return 1;
}
std::cout << "end test\n";
return 0;
}